The NEA Expert Group on Operational Safety (EGOS) held its annual meeting on 7 October 2019 to discuss operational safety and the long‑term safety of geological disposal of radioactive waste. The meeting included a topical session with two presentations on challenges in addressing the interface between operational safety and long‑term safety. The first presentation by the Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) focused on the interaction between the pre- and post‑closure phases of geological repositories in terms of the features, events, and processes (FEP) analysis and derivation of hazards. The second presentation was delivered by the Nuclear Waste Management Organization of Japan (NUMO) and outlined NUMO’s challenges in maintaining pre- and post‑closure safety. In addressing these challenges, NUMO has a strategy to reduce uncertainties of post‑closure safety through the limited use of hazardous materials and their removal prior to closure.